Take-up-arresting mechanism for looms.



P EN'TED JUNE 2 No. 729,593. w

R. JAMIESONx V TAKE-UP ARRESTING MECHANISM FOR LOOMS.

APPLIOATION FILED B30216, 1902.

cams rams co. Pnoroum mama. nl c,

Unwrap STATES Patented June 2, 1903.

PATENT Games.

ROBERT JAMIESON, or HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER- COMPANY, or HOPEDALE, MASSACHUSETTS, A CORN)- RATION OF MAINE.

TAKE-UP-AR R'ESTING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 729,593, dated June 2, 1903. Application filed December 16, 1902- Serial No. 135,398- (No model.)

T0 all whom it may concern: v

Be it known that 1, ROBERT JA IESCN, a. citizen of the United States, and a resident of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in '1ake-Up-Arresting Mechanism for Looms, of which the following description, in connec tion with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

Looms are now very generally; equipped with mechanism to effect the stoppage thereof upon the occurrence of a warp fault, such as failure of a warp-thread, the term failure including breakage, running out, or improper slackness of a warp-thread, and all looms of the automatic filling-replenishing type are provided with Warp-stop-motion mechanism.

When a loom is stopped by or through the occurrence of a warp fault, the take-up mechanism ceases to operate when the loom is actu-: ally at rest; but after release of the shipper the loom may turn over one or more times, according to the momentum of the moving parts, and the take'up continues to operate while the loom turns over. This is objectionable, as a thin place is apt to be made in the cloth when the loom is started after the fault in the warp has been remedied; and my present' invention has forone of its objects the production of means for arresting take-up substantially simultaneously with release of the shipper, so that when the loom is again started the take-up operation will begin at,

and. I have provided novel'meansfor arrest-' ing the'operation of the take-up on every detection of filling failure, so that there will be no thin places or stripes formed in the cloth.

Double detecting-looms of the above type, if provided with filling-replenishing means,

mechanism in wellknown manner.

are constructed and arranged so that filling replenishment is effected onlyon a certain pick in order that the shuttle may be in the shuttle-box at the replenishing side of the loom, and heretofore arrest of the take-up has been effected on every detected pick, but accompanied by let-back if the first detection of filling failure takes place on the shot of the shuttle toward the replenishing side of the loom.

I have herein done away with the let-back means, but arrest take-up on every detected pick.

The various novel features of my invention will be described hereinafter in the specification, and particularly pointed out in the following claims.

Figure l is a left-hand side elevation of a portion of a loom with its take-up mechanism with one embodiment of my invention applied thereto. Fig. 2 is a top or plan view, centrally broken out, of the means for detecting fillingfailure on each pick; and Fig. 3 is a detail view, centrally broken out, of a form of warp-stop-motion mechanism whereby arrest of take-up can be effected upon the occurrence of a warp fault.

Referring to Fig. 1, the lay-sword A the take-up ratchet a the train of gearing between its shaft and the take-up roll T, and the controlling rock-shaft cl may be and are all substantially as in United States Patent No. 610,636, dated September 13, 1898, said rock-shaft forming a part of the means for efiecting the operation of filling-replenishing The shipper S, pivoted at s on the loom side, and its notched holding-plate N are of'well-known construction and operate in usual manner familiar to those skilledin the art. As shown in Fig. 1, the lay-sword has an attached bracket a,'provided with a slot 3,in which is adj ustably secured a pin a, on which the take-up-actuating pawl a is fulcrumed, said with a short rearwardly=extended arm 0. to which is pivotally connected at a the lower end of an upturned link a", longitudinally slotted at its upper end at a to loosely receivea lateral stud d on an arm d, fast on the rock-shaft d The weight of the link acting through the arm a serves to keep the pawl 0t normally in engagement with the ratchet a the feed-stroke of the pawl being efiected by the forward movement of the lay-sword on the beat-up of the lay. When the rockshaft d is turned in the direction of arrow 6, Fig. 1, the arm (1 acts to lift the link a, and the pawl is thereby turned on its fulcrum a and lowered, disengaging it from the ratchet, so that take-up is arrested duringsnch disengagement. Such rockingof the shaftis herein effected by or through detecting action of either one of two filling-detectors located at opposite sides of the loom, Fig. 2, and arranged to detect on alternate picks, so that every pick is a detecting-pick. One of the detectors is arranged to effect filling replenishment through rocking of the rock-shaft d in well-known manner, and at the same time the arm 61 is raised far enough to arrest take up in the manner described. The other filling-detector is arranged to rock the shaft d sufficiently to raise the arm d and effect arrest of take-up, but not to operate the replenishing mechanism, and the construction may be substantially as in United States Patent No. 711,737, dated October 21, 1902.

In Fig. 1 I have shown a part of the hopper or filling-feeder F and the transferrer F of a well-known form of filling-replenishing mechanismsuch, for instance, as is shown and described in United States Patent No. 529,940, the rocking of the rock-shaft d effecting the operation of. such mechanism as provided for in said patent.

Referring to Fig. 2, the detector or fillingforkfand its slide f having an outward movement imparted thereto by or through cooperation of the weft-hammer W upon detection of filling failure, are substantially as in said patent, the outward movement of the slide acting through an upturned-armf fast on the rock-shaft d", to turn the latter far enough to effect change of filling and arrest takeup. The other filling -detector g is mounted on a slide and upon detection of filling failure by the detector 9 the slide is moved outward by cooperation. with the weft hammer W Such outward movement of the slide g acts to swing outward an upturned arm g mounted on the rock-shaft d but having lost motion thereon to a limited extent, so that the rock-shaft is turned only sufficiently to arrest take-up for that pick by or through the means described, the lost motion being provided by the shoulder g on the hub g of arm 9 cooperating with the shoulder g on the collar g fast on the rock-shaft d (See Fig. 2 as in Patent No. 711,737.)

A detent-pawl (Z is shown in Fig. 1, and this pawl is in continuous cooperation with the ratchet a so that there is no let-back no matter which detector detects filling failure.

I will now describe the means to arrest takeup by or through the occurrence of a warp fault, such as failure, running out, or undue slackness of a warp-thread. To this end a rock-shaft 9 is mounted on the lower part of the loom-frame, and it is provided with a depending arm g and an upturned arm 9 bent over at its upper end and provided with an inclined or cam slot 9, Fig. 1, through which is extended the lower end of the shipper below its fulcrum 3 The rock-shaft g and its attached arms are controlled as to their movement by suitable warp-stop-motion mechanismsuch, for instance, as shown in Fig. 3a link 9 forming a part thereof, being connected with the arm g and serving to turn the rock-shaft 9 upon a warp failure. A third arm is secured to the rock-shaft, and it is extended rearwardly, said arm having a lateral pin or stud g thereon beneath the arm a of the take-up pawl. When the warp-stop-motion mechanism operates, the rock-shaft g is turned to move the arm 9 in the direction of arrow 10, Fig. 1, releasing the shipper from its holding-notch, and at the same time the arm g is raised, its pin or stud 9 engaging and lifting the arm 0. and thereby turning the pawl a on its fulcrum a to disengage the pawl and ratchet. Take-up is thereby arrested simultaneously with the release of the shipper, so that if the loom turns over before coming to a stop or if the loom is thereafter turned over by hand the take-up mechanism will not operate. Return of the shipper to running position operates to turn the arm 9 oppositely to arrow 10, Fig. 1, and thereby the rock-shaft gis turned to lower the arm g to normal position, permitting the rengagement of the pawl a with the ratchet a Whenever the take-up is arrested, whether by or through detection of filling failure or. upon the occurrence of a warp fault, it is effected by moving the takeup pawl a on its fulcrum due to lifting movement of the arm a.

The \varp-stop-motion mechanism may be as shown and described in United States Patent No. 673,825, dated May 7, 1901, the link 9* herein corresponding to the link M of said patent.

In Fig. 3 I have shown the stop-motion-controlling detectors d the cooperating feelers f as in said patent, the usual cam-shaft O and the connections intermediate the feelers and the link, arrest of a feeler by a released detector operating through such connections to move the link g longitudinally toward the back of the loom, all substantially as described in detail in the patent referred to.

My invention is not restricted to the precise construction and arrangement herein shown and described, as the same may be varied or rearranged in different particulars by those skilled in the art without departing from the spirit and scope of my invention.

IIO

, I-Iaving described my invention, what I claim as new, and desire to secure by Letters Patent, is.

1. In a loom, means to detect filling failure on each pick, take-up mechanism, means to arrest take-up on every pick inwhich failure of filling is detected, andmeans operated by or through the occurrence of a warp fault to arrest take-up.

2. In aloom ,stopping means, take-up mechanism, means operated by orthrough the occurrence of a warp fault to arrest take-up and effect the actuation of the stopping means,

and independent means to arrest take-up on every pick in which the filling fails to be properly laid.

3. In a loom, a shipper, take-up and warpstop-motion mechanisms, means to simultaneated by or throughthe detection of filling failure on any pick, to arresttake-up on the detected pick, or picks, and means to arrest take-up independently by or through warp failure. I

5. I In a loom, provided with automatic filling-replenishing mechanism, take-up mechanism, two filling-detectors, means to arrest take-up upon detection of filling failure, by

either detector,one of the detectors effecting filling replenishment, Warp stop motion mechanism, and means" actuated by the operation thereof to arrest take-up.

6. In a loom, a shipper, a releasing device therefor actuated by or through warp failure, take-up mechanism, means operated by actuation of the releasing device to arrest takeup, means operative on each pick to detect filling failure, and connections between said means and the take-up mechanism,to'arrest the latter on every detection of filling failure.

7. In a loom, a shipper, a releasing device therefor actuated by or through warp failure, take-u p mechanism including a ratchet, a continuously-cooperating detent-pawl, and an intermittingly-operated actuating-pawl, means operated by actuation of the releasing device to render the actuating-pawl inoperative and arrest take-up, means operative on eachpick to detect filling failure, and'connections between said means and the actuating-pawl, to temporarily render it inoperative on every detection of filling failure.

8. In a loom, Warp-stop-motion mechanism, means to detect filling failure, take-up mechanism, including a ratchet, a cooperating pawl, and a pawLcarrier on which it is pivotally mounted, and separate means to rock the pawl and disengage it from the ratchet, to arrest take-up, upon detection of filling failure or upon the operation of the warpstop-motion mechanism. i

9. In a loom, take-up mechanism, including a ratchet, a cooperating pawl, and a pawl-carrier on which it is pivotally mounted, said pawl having an attached arm, means to detect filling failure, a connection between said means and the arm of the pawl, to rock the latter and effect arrest of take-up upon detection of filling failure, and means actuated by or throughwarp failure to move said arm and rock the pawl, to arrest take-up.

10. In a loom, take up mechanism, and meansto arrest the operation thereof by or through the occurrence of a warp fault.

11. In a loom, take-up mechanism, stopping mechanism for the loom, and means to arrest take-up and effect the operation of the stopping mechanism by or through warp failure.

12. In a loom provided WithWarpstOp-motion mechanism, take-up mechanism, includ ing an actuating-pawl, and means to render said pawl inoperative and arrest take-up by or through the operation of the warp-stopmotion mechanism.

13. In a loom, take-up mechanism, including a ratchet, a cooperating pawl, apawl-carrier on which the pawl is pivotally mounted, and means actuated by or through warp failure to move the pawl from engagement with the ratchet and arrest take-up.

14. In a loom, a shipper, take-up mechan ism, and means actuated by or through warp failure to simultaneously arrest take-up and release the shipper.

15. In a loom, a shipper, a releasing device thereforactuated by or through warp failure, take-up mechanism, and means operated by the releasing device to arrest take-up.

16. In a filling-replenishing loom, take-up mechanism, means to arrest the operation thereof upon filling replenishing, and sepa rate means actuated by or through warp failure to immediately arrest take-up.

17. Ina filling-replenishing loom, take-up mechanism, a shipper, means to arrest takeup and release the shipper upon the occur rence of a warp fault, and independent means operative upon filling replenishment to temporarily arrest take-up.

18. In a loom provided with filling-replenis'hing and warp-stop-motion mechanisms, take-up mechanism, and means to arrest takeup by or through a warp fault and upon filling replenishment.

19. In a loom, warp-stop-motion mechanism, take-u p mechanism, and connections be tween them to arrest take-up upon the operation of the warp-stop-motion mechanism.

In testimony whereof I have signed my name to this specification in the presence of 

